[mkgmap-dev] Spurious points & Basecamp blank tiles

Wed Nov 16 15:38:00 GMT 2016

Hi all,

I did not get any feedback on this patch. I am not sure if it fixes the
problem or if it's just a work around.
Does anybody expect a problem with it?

Gerd

Gerd Petermann wrote
> Hi Teemu,
> 
> Maybe I have a fix for this. We have special code in mkgmap for
> POI with type >= 0x0100 && type <= 0x1100, they are considered to be
> cities
> and those are special.
> With the attached patch only those with subtype = 0 are:
> type >= 0x0100 && type <= 0x1100 && (type & 0xff) == 0
> 
> This seems to fix the problem, but maybe it is only a workaround.
> Another observation: The MP file gives a label for each of these 0x1001
> POI, the pbf file doesn't.
> 
> A binary based on r3701 is here:
> http://files.mkgmap.org.uk/download/312/mkgmap.jar
> type_0x1001.patch
> <http://gis.19327.n8.nabble.com/file/n5885745/type_0x1001.patch>  
> 
> Gerd
> Teemu Peltonen wrote
>> Hi,
>> 
>> http://kartat.hylly.org/mkgmap/M431_cgpsmapper.img is created with 
>> cGPSmapper and contains point type 0x1001 (among other rather exotic 
>> types) without problems. Polish map file used to generate this file can 
>> be found from http://kartat.hylly.org/mkgmap/M431.7z.
>> 
>> It also looks like that these artifacts does not exists when the img is 
>> created from a pbf file containing no actual OSM data. Map generated 
>> from http://kartat.hylly.org/mkgmap/M431.osm.pbf with the same style 
>> definitions works perfectly fine. 0x1001 points are, however missing so 
>> they might definitely be part of the problem. The only difference 
>> between M431_osm.osm.pbf (from the original post )and M431.osm.pbf is 
>> that OSM data is merged to M431_osm.osm.pbf with osmconvert.
>> 
>> -Teemu
>> 
>> 9.11.2016, 13:40, Gerd Petermann kirjoitti:
>>> Hi Teemu,
>>>
>>> please provide a link to a small map with an 0x1001 type created with
>>> cGPSmapper. Maybe we can learn from that.
>>>
>>> Gerd
>>>
>>>
>>> Teemu Peltonen wrote
>>>> Hi,
>>>>
>>>> those same types worked with cGPSmapper without a problem. Thank you
>>>> for
>>>> this insight, I'll try to change types and see what happens.
>>>>
>>>> -Teemu
>>>>
>>>> On Wed, Nov 9, 2016 at 12:31 PM, Andrzej Popowski <
>>>> popej at .onet
>>>> >
>>>> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> I have once created a test map for all possible objects, using
>>>>> cGPSmapper.
>>>>> I have found, that some objects are problematic. I don't remember
>>>>> details,
>>>>> but I think sometimes map doesn't work at all.
>>>>>
>>>>> My current set of good points exclude 0x1001. Actually I think that
>>>>> for
>>>>> types 0x01xx to 0x11xx only subtype 0 is accepted. And some POI types
>>>>> doesn't work at all, for example 12xx, 13xx, 31xx-3fxx.
>>>>>
>>>>> I don't know if this is a problem of Garmin devices or cGPSmapper.
>>>>>
>>>>> --
>>>>> Best regards,
>>>>> Andrzej
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> mkgmap-dev mailing list
>>>>>
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>>>>> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
>>>>>
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>>>
>>>
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